33results about How to "Increased gas flux" patented technology

The invention relates to a composite film for an MABR (Membrane Aeration Biofilm Reactor) and a preparation method. The composite film is formed by a porous film and a levodopa composite layer compound on the surface of the porous film. The preparation method comprises the following steps: (1) preparing levodopa solution, i.e. preparing levodopa into the levodopa solution with concentration of 0.05 to 3g / L; (2) coating, i.e. uniformly coating the levodopa solution on the outer surface of the film; and (3) carrying out heat treatment, i.e. carrying out heat treatment on the composite film. The MABR composite film prepared by the preparation method disclosed by the invention has the advantages that the prepared film has high oxygen transmission performance, good surface hydrophilicity and biocompatibility and high roughness of the film surface.

The invention discloses a preparation method and application of a polymer-based composite tube membrane, compared with a traditional method, the composite membrane prepared by the method has the advantages that the thickness of a polymer matrix membrane is greatly reduced, and meanwhile, a metal framework material grows in a limited range in a polymer; the size of the metal organic framework material is controlled, the defect that the metal organic framework material is easy to fall off on the carrier is overcome, and a continuous and compact metal organic framework-high-molecular polymer selective separation layer is formed on the surface of the tubular carrier. According to the composite separation membrane, by reducing the thickness of the membrane and introducing the metal organic framework material, the gas flux of the high-molecular polymer membrane is improved, the molecular screening capacity is high, the gas permeation flux is high, and the composite separation membrane has a good application prospect in the chemical field needing gas separation and purification.

The present invention provides a method for realizing high-efficiency gas separation by the COFs film. The COFs film material is formed by the interface reaction between the organic solution and the glass bottle wall; Post-synthesis modification is carried out, and metal ions and grafted molecules are introduced for chelation coordination, so as to effectively divide the pores of COFs thin films. Such COFs thin film materials are synthesized by the liquid-solid interface method, which is universal. The operation is simple, the cost of raw materials is low, and it has large-scale processability, and its thickness, pore environment and gas separation performance can be effectively regulated by controlling the concentration of reactants, catalysts and introduced graft molecules. The prepared COFs thin film material Separation of H at normal temperature and pressure 2 / CO 2 Larger gas fluxes were shown in the mixed gas test.

The invention relates to a high-performance silicon carbide nano-fiber membrane and a preparation method thereof. The preparation method comprises the following steps: adding a certain amount of silicon carbide nano-fibers into de-ionized water; stirring and carrying out ultrasonic mixing to prepare a uniform and stable membrane preparation solution; uniformly spraying the membrane preparation solution on a porous ceramic matrix by adopting a spray coating method; after drying at constant temperature, immersing the porous ceramic matrix into metal oxide sol; then carrying out negative-pressuresuction to enable a pore channel of the matrix to be fully filled with a sol solution; drying the porous ceramic matrix adsorbed with the sol again at constant temperature; finally, raising the temperature through a program and sintering to obtain the silicon carbide nano-fiber membrane. The silicon carbide nano-fiber membrane prepared by the preparation method can be effectively embedded into the surface-layer pore channel of the matrix; the binding force between the nano-fiber membrane and the porous ceramic matrix is strong. The separation membrane provided by the invention has the advantages of good thermal shock resistance, great gas flux and the like, can be used for purification treatment of industrial tail gas and has a wide application prospect in clean production of fields including cement, glass, metallurgy, energy sources and the like.

A Cis-magnetic lamellar flow self-convergent oxygen enricher, belonging to gas separate technique realm. The invention utilize the distinguish of oxygenic paramgnetism and other gaseous antimagnetism, providing a gas which can wash speccally distribute in the condition of the forming sready lamellar flow postural diversified press and diversified temperature, utilizing the speccal distributed strong magnetic field which the oxygen molecular paramgnetism washed in lamellar flow, realizing selfgather thereby separating from other antimagnetic gas to reach the purpose of oxygen's enrichment, the lamellar flow state can eliminate the remix phenomenon of detached cis-magnetism oxygen with other antimagnetic gas.

A semipermeable gas separation membrane is plasma deposited from liquid organosiloxane monomer having at least three silicon atoms and an alpha hydrogen atom. The semipermeable membrane may be employed as a gas-selective membrane in combination with a porous substrate.

The invention discloses a treatment technology for petroleum associated gas, and belongs to the technical field of treatment of petroleum associated gas. The treatment technology comprises the following steps of compression of the associated gas, drying, pre-cooling by ammonia, refrigerating by an expansion machine, distillation of product, and dry gas power generation; in the drying process, a composite film is used for drying and dewatering; the composite film is a double-layer composite film which is prepared by mixing and weaving stainless steel fibers and glass fibers into a net-shaped bottom film, pressing a thin film into a blank, firing and forming. The treatment technology for the petroleum associated gas has the advantages that the petroleum associated gas is treated and is usedfor dry gas power generation; the operation is simple, and the treatment steps are concise; a film drying technique is used for dewatering, the dewatering speed is high, the permeation amount of gas is high, and the secondary pollution due to production of dust is avoided.

The invention discloses a filler assembly capable of eliminating amplification effect, which comprises a filler section, a filler clapboard, filler units, a filler support plate and a liquid redistribution board, wherein the filler clapboard partitions the filler section into a plurality of filler units, the liquid redistribution board is provided with open pores matched with the filler units, a weir is arranged around the open pores, the weir is provided with tooth gaps, and the open pores have the shapes similar to those of the filler units, and have small area. The assembly changes a filler tower into the plurality of filler units connected in parallel, and the vapor and liquid of the filler section are uniformly distributed and the wall flow effect is eliminated by matching the corresponding liquid redistribution board so as to ensure efficient and stable mass transfer effect and eliminate the amplification effect; the adverse initial distribution of a liquid distributor is corrected; by adopting a plug-in structure, the treatment capacity of the tower is only related to the number of the filler units, so the design of the tower is not limited by the scale; and the liquid distributor is replaced by a distribution board so as to reduce the requirements on tower height and mounting level and reduce the investment.

The invention discloses an Rh@CuSiO3 nano-structure hydrogenation catalyst and a preparation method of same. The preparation method includes the steps of: 1) synthesizing silicate nanotubes in an ethanol-water system through a hydrothermal method, and controllably synthesizing cupric silicate nanotubes by adjusting experimental conditions; 2) supporting metal rhodium in the cupric silicate nanotubes through an impregnation method. In the Rh@CuSiO3 hydrogenation catalyst, the structural confinement effect of the core-sheath material and synergistic effect among the components are coupled, so that dispersity of active components is increased and interaction between the active components and the supporter is improved, thereby improving the catalytic performance in the hydrogenation. The catalyst has extensive application prospect.

The invention relates to a mixed mechanism membrane and a preparation method thereof, belonging to the technical field of gas separation membranes. The technical problem to be solved by the present invention is how to provide a uniform, continuous, long-term, high gas flux, high selectivity, good gas separation and excellent chemical stability of the mixed mechanism membrane and its preparation method. The mixed mechanism membrane of the present invention is based on a porous silica film, and a mixture of soluble inherent microporous polymers and metal-organic framework materials with a mass ratio of (90-70):(10-30) is the surface; its preparation process is The soluble intrinsic microporous polymer is mixed with the metal-organic framework material, and evenly coated on the surface of the porous silica film. The mixed mechanism membrane is uniform and continuous, has long-term effect, high gas flux, high gas selectivity, good gas separation properties, excellent chemical stability, simple preparation method, low cost, and is beneficial to industrialization.